Thermoplastic polymer compositions
CA 2080111 A1 · Owner: Silvestri, Rosanna · Inventors: Silvestri, Rosanna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoplastic polymer compositions obtained by mixing: A) from 10 to 90 parts by weight of one or more modified polyolefins obtained by grafting an unsaturated carboxylic acid and/or its derivatives or their mixtures, with nonmodified polyolefins; with B) from 10 to 90 parts by weight of an aromatic vinyl polymer, or a copolymer of an aromatic vinyl monomer with acrylonitrile and/or methacrylonitrile which are, modified grafting or copolymerizing with an unsaturated carboxylic acid and/or its derivatives or their mixtures, with vinyl aromatic polymers or copolymers of an aromatic vinyl monomer with acrylonitrile and/or methacrylonitrile; and with, C) from 0.1 to 7 parts by weight of an …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.